This TOSHIBA Tecra A5-S416 AC Adapter is 100% compatable with the TO1901 TOSHIBA Tecra A5-S416 AC Adapter. Our batteries and accessories are made with high quality parts and are guaranteed to meet or exceed the original equipment manufacturers specifications at a reduced price. All batteries are tested for 100% quality control assurance. This TOSHIBA Tecra A5-S416 AC Adapter includes a 1 warranty to guarantee that it has no manufacturing defects.